Finishing machine



1 644 Oct. 11, 1927. L. s. MACDONALD 9 FINISHFING MACHINE Filed Dec. 26, 1922 4 Sheets-Sheet 1 Oct. 11.1927.

L. s. MACDONALD FINISHING MACHINE 4 Sheets-Sheet 2 H I I l N q: I

l I I Filed Dec.

IIIII I IIIII IIII I lllllll- I JIIIIIIlIIII l lllllllllllllllll Ill.

/ III lllllllll'l 1644.931 Oct. 11, 1927. L. s. MACDONALD FINISHING MACHINE Filegi Dec. 26. 1922 4 Sheets-Sheet 3 W77 72 i /0 64 70 a F1994. a 4 '1 68 :"1'" 66 6 TL J0 46/ J4 J8 e I If Jz 76 48 Flg. 5.

/NVENTL7R.

0 1 Oct 927 s. MACDONALD FINISHING MACHINE Filed Dec. 26, 1922 Patented Oct. 11, 1927.

NTEDT' STATES P TENT LESTER s. MACDONALD, or BEVERLY, massaonuss'rrs, nssrsnoa reeman sHoE MACHINERY CORPORATION, or rATERson, "NEW JERSEY, A eoRPonATIoitnoE NEW JERSEY.

FINISHING iridium.

' A p p lieation med December 26, 1922? seriai" he. teams.

In the illustrated fmhchine', this objectis obtained by'p'rovi'din'g'a finishing tool made up of a series of work rubbing elements arranged for relative-adjustment and ha'ving their work rubbing surfaces arranged in ad acent relation. Preferably, the resultant surface of the finishing tool is transverse to a driven shaft, being supported at their ends by the shaft and an annular member surrounding and attached to the shaft, by means of which rotary movement is imparted to the tool and the elements of the tool are adjustable, as by distortion of the individual elements, in a direction parallel to the axis of the shaft. This adjustment of the elements of the tool may be effected by the. use of one or more adjustable backing members which are preferably resilient. The latter have movement parallel to the shaft to produce a curved contour and radially of the shaft to vary the character or location of the curvature. To impart a yielding: quality to the burnishing surface, the backing members are springnpressed against the rubbing elements and the tool as a whole is also mounted to yield under pre sure of the work.

Another object is to provide improved means for heating the tool and for supplying it with wax in the desired quantity. As shown. the tool is enclosed, except where'the work is presented, by a casing which is electrically heated and transmits heat to the tool by radiation. Both the casing and the wax supplying mechanism have a pivotal mounting so that they can be swung to one side to allow access to the tool.

These and other objects, features and adthe shaft.

vantages oftheinventi'on will appearfrdm a consideration" fof 'fthe detail specification with the'aceoinpanying drawings irf w'vhich, Fig: lisa perspective iew' oftm operaemit! .II'iL Figri is a horizontal sectionof a' portion f1 Figifi"isia ft ont elevation, 'part lybr'oken faway; ofth'ebburnis'hing' tooh Fig: (S -is. 'afrontyiewbfthemachine.

Fig." 7 is akle'tail perspectiv'view-of one "of thespiial burnishing-elements;'and

'Fig. 8"isaperspective view of the outer end of one of the spiral burnishing elements. Theburnishing tool of this invention is mounted atthe end of a central, driven shaft 10' 'journaled in hearings in the frame.

Fixed at'the end of the shaft between two spaced collars 14 is a sleeve 12 having around its periphery a series of radially extending kerfs each adapted to receive the inwardly bent end of an elongated, flat, spiral rubbing element 16. The corners of the outer edges of the elements are relieved, as shown in Fig. 8, and their convolutions are received one within the other and collectively form a disk-like burnishing surface which is substantially continuous and at right angles to theshaft. The outer end of each element is bent laterally as indicated at 18 in Fig. 8and again bent at right angles to form a tOngue'QO arranged to'enter a groove 22 in a'ring 24c' which'rotates'with The tongues are'held within the groove by lugs 28 extendin'glaterally from a ring '26 enclosing'the ring 24, each lugoverlying one-of the rubbing elements adjacent to the bent portion 18. The ring 24 has projections 30 (Fig; 4-) extending towards the shaft and secured by screw bolts 32 to arms 34rradiating from a central member or hub 36 splined to the shaftlO by a key 38. f In the illustrated machine, there are three projections 30 and three corig'if3 isa longitudinal vertical section. i

responding arms 34 which form driving arranged to thrust the hub forward and keep it, press against a stop collarfined time by m'eans "of'a' series of backing members herein shown as substantially eggshaped springs 44 arranged to contact with the inner edges of the burnishing elements j usted tothe desired degree to take the thrust 10 intermediate of their pointsof supportand displacepprtions qf-them parallelto theaxis at the 'z ?Q9 1he Y ein t -individ el e s iEa'sh eais-lik f ielix ableisifip resl-a a le d t le d w but-es it di m te g- -lnfih p n h formed at the ends of the 44'are ress-i tht e iQ v.( ae 5): 1: membrs. 48 shi hae aw ly P ra d hymns of o ldered pins 50 (Fig. '4) te the inwardly" ex te .disgt-flep eae z n .52 slida'bly held thegingg. LThefiange of .the ring 5 is arranged to slide parallel to theisha ft 911 -sorev 7, bol ts;54 fixed .to the projections there bing'geloil springs; surrounding the 25 ansliaer ael a el eth ring a iier a dva i wa":lThs a k g' members 44 are ate sdite l lid spla s ?la rally at their ,centml ..-.portijons :iii, .twol flirections, lia djrectioniparallel to th'dsha'ft and i' nd-in a direction radially 'of'the, shaft. s me s; nre-"r du s mw w Po ntting the backing members and aging astenifijil slidable in'a-sl'eeve 62 peii-cranbmeinber ,pivotcd ..at =64... IL ill lds e h s i 6 d-.,i i

is ,li eki e emb reai yie V hich .isrequiredi n ,qrdeii that the .pninisi ing-surface may 'searchfout' and find he minor irregularities in the .work. The

.xor vard movement ofthe backing members jimder the influence of the springs 66 is vlimited by.1pins 68 fi1;ed to the stems and piissmgtln-ough slots in the sleeves of the zbell-crank members. The central portions 'of the backing 'membersare moved radially 1 by means of sector gears 70 .on the bell-crank member s engaged by racks 72 on the end of a-sleeve 74 (Fig. 3) which is slidable on the .shaft 10.against the tension of the spring 40 hereinbefore referred to.

.The pivot pins 64 of the bell-crank members are mounted in pairs of lugs 76 projecting radially from a sleeve 78 splined by .means of a key 80 to the sleeve 74. The sleeve 78 has a peripheral groove 82 receivi ng at opposite sides rolls on the lower end of a. lever arm 84 (Figs. 1 and 3) loose on a shaft 86 .which is fixed in position on the frame. .The lever arm 84 is coupled to a .hand lever 88 having a spring-pressed pawl 90 arranged to engage with the teeth of a rack-92 fixed to an adjusting lever 94. The adjusting lever-94 has a hub which is loose on thefixed shaft 86.- One end of a spring 98 isreceived back of a lug 96 (Fig. 6) on (Fig-3) .andthe sector gears 70 to tlilufl the adjusting lever and its other end 100 is receiyedin one of a seriesof notches formed b'ack'of theproj'ections"102 on acasing 104. The casing is actuated by a handle 106 which 18 hollow and houses-a spring' pressed pawl -108 (Fig. 1)-arranged to'enga-ge theteeth of a ratchet 110 which is fixed-to the shaft 86. By releasing the pawl and turning the handle, the tension of the spring 98 may be adof the workagainst the tool. The spring 98 np'rmallyiholds' the adjusting lever 94 with its lower. arm1'1l2,fa'gainst a fixed stop 11.4 (Flg's. '1 and?!) "the'frame, but these two parts eanseparate if :thepressure of the work ..and has at-its lower. forked end a pair of mus received in a groove .136 of ,the sleeve 74; ab0ve referred to. By depressing the pawl 128 from the rack teeth, the hand lever l30.may heindependent-ly actuated to slide the-sleevel'i i'and thereby move the ra -"s thecentral portions of the backing meant) towards or from the shaft- 10. 110 t .of theother. hand lever 88 effects movements of both sleeves as follows--53" depressing the pawl-9O the hand lever may e actuated to rock the lever arm c4 and slide the outer sleeve 78 ina direction parallel to the shaft. Equal sliding movement is imparted to'the inner sleeve 7-ithrough the link 11.8, arm 120, hub 122, lever 124, rack 126, hand lever 130, rock-shaft 132 and arm 134. Movement of both sleeves, through the backing members, displaces the rnbl'iing' elements and. forms a, convexity in the tool surface. Having thus actuated the iever 88 to displace the convolutions in a direction parallel to the shaft, the character or location of the curvature thus produced can be adjusted by independent movement of the hand lever 130 which varies the radial positions of the backing members.

The resulting contour of the work rubbing surface of the tool thus produced is substantially uniform around its whole periphery, as illusrated in Fig. 4, because of the symmetrical arrangement of the various backing members around the axis of the shaft and the further fact that cdgewise distortion of the individual rubbing elements 16 within the are between adjacent backing members is inherently resisted by the edge wise position of the elements 16.

manner Surrounding the tool, except -alt 'tba't' p'or' tion 'where' the work is -presnted,' is a cup shaped casing 138 (Figs. land 3) having'a plurality of hollow bosses receiving electric heating units 140. The inner surface of the casing 138 is corrugated (Fig. order to radiate moreheat-to'the workjin' surfaceof the tool. A wax receptacle M2 iscarr-ied by the heated-casing and-"rotatably lower part of 'a waxtransferring' disk or wheel 144. The rotationof ithe dislr in the liquid lifts a of wax from the reoeptaole and,the wax is' scraped fro'm the disk bywi pair of forks M6 formed' on'amemberwhich has a channel or groove 148 leading through an opening in thecas'ingtdthe central part of the tool. 1 The wax' being supplied toithe centerof the tool spreads radiallydnder'the actionof centrifugal force. To preventlthe wax from being thrown offfrom the tool, the latter isrotated in the direction 6) in which the convolutions of thezspiral-members open so that the effect of: centrifugal force is largely neutralized.- Theklirectiion of rotation is indicated inFigz fi asacounter clockwise and is such that'the'nubbinguelea ments rub the heel in the diirectionnofnthe tOpllft. 5'1" nf-n1 The wax transferring wheelisldrivenbyia stub shaft 150 'journaledin an'iarml 52zpivlotally mounted on a stub shaftsfiifa 'lhe amount of wax taken bynthe'tool fromthe disk is regulated by ladjusti'ngithe degreemf projection of the disk between the-forksrl' tfi, and. this is accomp'lishedby amfadjusting bolt 156 which passes through aic'urved slot in the arm-152...'The wheeliisidriven from the stub shaft 154 by pulleysi'and arround belt 158. The'stub shaft .154 has a -toothed clutch member 160 at its rear ,end engaging a similar toothed clutch n1ember- -l62'on the forward end of a shaft 164: journaled-in the frame. The toothed connection-allows the sections of the shaft to be sepairated' All of the parts including the wax transferring mechanism and the heated casing are mounted on an arm 166 pivoted on a rod 168 at one side of the tool and swingto one side to afford. access to the tool. The clutch members are detchably held in engaged ,position by a bolt- 172 pivoted between lugs 170 on the frame and having a wing nut 174 arranged to engage the forked free end ofthe arm 166.

A tread rest ITS-(Figs. 2, i and 6) forthe heel of the shoe is adjustably mountedpn the arm 166 and can be held in place by the 'hand nut 17 8. A side rest 180 (F igs and G) is also mounted on the arm 166 and can be held in adjusted position by the hand nut 182 (Fig. 6). The shaft 164 has at its rear end a gear 184 (F' 1) driven byia worm 186 on the drive i iaft 188. At one end of the drive shaft 188 isa bevel gear 190 meshing with a bevel gear 192 on the driven The-yield to :the tool as'a; Whole is furnished I bywthezspri-ngE-98 which opposes the thrust oftheworkA 5 c Having described my invention, what f 'I claim asynewi-and. desire to, secure by Letters Ratento rthe United-States is l 1. i111 a machine oftlle character; described, a finishing tool comprising-n ,rotary, driven member arfieriblev rubbing e m t, fi rv d outwardly; from e. -;ax s-,.= fasai ir n member inqtheiform -iof. ,a spiral of=Archi- 'inedes -and )meansfor connecting only the endsv .of said elementto the driven member arranged to .allow variations of the contour ofz said element.

=2. Ina machine of the character described, a; finishing tool comprising a rotary driven member, ;.a rubbing element extending from said driven nembenin theform-of a spiral, ineehanisrnforisupplying wax to the element near-the, axial-of rotation, and means for rotating saidelement in the direction that thebonvolutions of thespiral open to modify the .eflectof centrifugal force in spreading fihelwaxii I ,3. In a machine of the character described, a finishingtool comprising a central driven membergand a plurality of flexible rubbing elementsprojectin from said central member in the form of spirals and having their conyolutions one inside the other. 4. In a machine of the character described, a rotatable shoe finishing tool comprising a central driven member, a driven supporting member spaced radially therefrom, and a plurality of rubbing elements having their I working surfaces arranged closely adjacent to one another and extending from the central driven member to the periphery of the tool, said rubbing elements being supported at their ends by said members.

5. In a machine of the character described, a shoe finishing tool comprising a driven shaft, an annular supporting member attached to and surrounding said shaft, and closely related flexible rubbing elements forming a substantially continuous disk-like work treating surface at substantially right angles to the shaft atthe end thereof attached to said member for rotation with the shaft.

6. In a machine of the character described, afinishingtool comprising a shaft, and work rubbing elements forming a working-surface extending transversely of the shaft, and means for varying the contour of said working surface.

7. In a machine of the character described, afinishing tool. comprising a shaft, work ri'ibbing elements projecting from said shaft and forming a .surfacetransverse to the shaft, and means for moving portions of said'elements in a direction parallel to the shaft to make a curved rubbing surface.

8. In a machine of the character described, a finishing tool comprising adriven shaft, rubbing elements projecting from said shaft and forming a; working surface normally in a plane at substantially right angles to the shaft, means for forcing portions of said elements in a'directiom parallel to=the shaft to make a curved rubbing surface, and means for varying the distance from the shaft at ,which said first means acts.

9. 'In-amachine'of the character described, a finishing tool comprising a shaft, rubbing elements secured to the shaft and forming a disk-like rubbing surface, and means for forcing portions of said elements in a direction parallelto the shaft to vary the contour of said surface, said means being yieldably pressed against the rubbing elements to enable the latter toyield upon pressure due to minor irregularities in the work.

10. In a machine for finishing the parts of boots and shoes,-a' rotary finishing tool comprising a shaft, a series of-rubbing elements projecting from said shaft and arranged'to form a work rubbing surface, a backing member arranged to contact with the rubbing elements on the side opposite the work rubbing surface, and means for changing the effect of said backing member to vary the contour of said work rubbing surface.

11. In a machine of the character described, a rotary finishing tool comprising a shaft, a series of rubbing elements projecting from said shaft and arranged to form a work rubbing surface, a plurality of backing members arranged to contact with the rubbing elements on the side opposite the work rubbing surface, and means for moving said backing members to vary the contour of said'work rubbing surface.

12. In a machine of the character described, a rotary finishing tool comprising a shaft, a series of rubbing elements projecting from said shaft and arranged to form a work rubbing surface, a plurality of backing members arranged to contact with the rubbing elements on the side opposite the work treating surface, means for moving said backing members parallel to the shaft to produce a curved contour for said work treating surface, and means for moving said backing members toward or away. from the shaft to vary the character of said curvature.

13. In a machine of the character described, a rotary finishing tool comprising a shaft, spiral work rubbing elements projecting from said shaft, the adjacent convolutions of the spiral elements being substantially in contact and arranged to shift in a direction parallel to the shaft, and means engaging-one side of saidcrubbing elementsfor causing the opposite side to form a curved, working surface.

14. In a machine of the character described, a -rotary finishing tool comprising a shaft,. a member supported for rotation with the shaft and having an adjustable work rubbing surface, a backing member, and means for moving said member to vary the contour of said work rubbing surface.

15. In a machine. of the character described, a finishing tool comprising a shaft, an adjustable member supported for rota tion with the shaft, andprovided with a work rubbing surface, a backing member, means for moving said member to vary the contour of saidwork rubbing surface, and a spring between the backing member and the means .formoving the adjustable member to impart a-yielding quality to the work rubbing surface.

16. In a machine :of the character described, -a finishing tool comprising a shaft, a member having an adjustable work rubbing surface, said member being supported for rotation with the shaft, backing members, a sleeve slidable onthe shaft and having' connections constructed and arranged to move said backing members toward or from the shaft, and a second sleeve mounted for sliding movement with respect to the shaft and constructed and arranged, to move said backing members parallel to the shaft.

17. In a machine of the character described, a rotary finishing tool comprising a shaft, a member having an adjust-able work rubbing surface extending transversely of the shaft, and egg'shaped springs associated with said member and movably mounted to vary the contour of said work rubbing surface.

18. In a machine of the character described, a rotary finishing tool comprising a shaft, a member having adjustable work rubbing surface, yieldable backing members connected at their ends to the tool and means for movin the intermediate )ortions of said members transversely of their length to vary the contour of said work rubbing surface.

19. In a machine of the character described, a finishing tool comprising a shaft, a member at the end of the shaft having radial kerfs, rubbing elements having their ends in said kerfs, an outer ring driven by said shaft, and c'onn'fc tions betweensaid ring and the outer ends .of said elements;

20. In a. machine I of vthe character described, a finishing toolf'comprisjing a shaft, an inner member and an outer, member spaced at a greater distance from'the shaft, said members being drivenb' said shaft, and a rubbing element attache at'its ends to said members. i I

21. In a machine'or' the character; described, a finishing -toolcomprising a shaft, an outer support. drivenby the 's ha ftfand spaced therefrom, spirail'-' i,"uhbing' 'ele ment operatively connected to the, sh'aftand the outer support. l f

22. In apparatus of the character He scribed, a finishing too'1," means for actuating the tool, a casing enclosing the tool,"and means for heating the casing, said casing being corrugated on the insideto increase its heat radiating eap'ac'ity on the',sicl".towards the tool t .;i=- :I 'I

23. In apparatus, rangers- {described, a finishing toot-"means for-acme ing the tool, acasing oyerlying the working face of the tool, 'ine'ansforlreating the easing to heat the tool by radiation, and a pivotal mounting for said casing to afford access to said tool.

24. In apparatus of the character described, a finishing tool, a receptacle for wax, a disk rotatable in said receptacle to lift a film of wax, and a scraper in contact with said disk to remove wax therefrom and provided with a groove to convey it to the finishing tool.

25. In apparatus of the character described, a finishing tool, a receptacle for was, a disk rotatable in said receptacle to lift a film of wax, and a forked member straddling said disk and having a groove to convey wax to the tool.

26. In a machine of the character described. a finishing tool, a receptacle for wax, a disk rotatable in said receptacle to lift a film of wax, means for removing the wax from the disk and conveying it to the tool, and means for adjusting the disk relatively to the removing means to regulate the quantity of wax conveyed to the tool.

27. In apparatus of the character describe-d, a. finishing tool, a receptacle for wax, a disk rotatable in said receptacle to lift a film of wax. a pivoted arm rotatably supporting the disk, means for adjusting the arm to regulate the supply of wax, and means for conducting the wax to the tool.

28. In apparatus of the character described, 21 finishing tool, means for actuating the tool, mechanism for supplying wax to the tool, and an arm carrying said wax supplying means and having apivotal mounting to afford access to said tool.

29. In apparatus of the character described, a finishing tool, an arm pivoted at one side of-the tool, mechanism mounted *on' the arm for supplyingthe toolwith' wax, and a sectionaI shaft; for actuating'said wax supplying mecha'nism, one section of the shaft beilrgmounted on the'ar'm and having a detachable clutch "connection with the other section.

301- In "appa-ratus--- of the character de scribed, a finishing tool; an arm, mechanism mounted on the and for supplyingthe tool with wax, a heated casing mounted' ofn the mend overlying th'etool to Heat-thelatter, and: a pivotal mounting ,for the? at-m an able casing 5 and 1 wax supplying jnecha 31. In apparatus of the class-damaged surface extendingtransv rsely*df the; snare; mechanism-for conducting? wax th the tool near its rq'tat -iom' andliaeana for r o' tati ng'the shaft"and teol tofspiead"the'wait averthle bu-rnishing surface. 32. 1M res filiishing he an of a aaishingaaai 'maae ap I or aseraes eamer-' riibbifig elements' capable at rerative adjustment-P and supported for ro tation with their work rubbing surfaces in adjacent relation arranged to form an operating surface transverse to the axis of retation, and an adjustable backing member constructed and arranged to coact with said work rubbing elements to determine and vary the contour of the resultant work rubbing surface.

33. In a machine for finishing the parts of boots and shoes, a movable driven member, a series of work rubbing elements capable of relative adjustment and operatively connected to said driven member for movement therewith, said elements having work rubhing surfaces arranged in adjacent relation, and an adjustable backing member constructed and arranged to coact with the inner edges of said work rubbing elements to determine and vary the contour of their combined outer work rubbing surfaces.

34. In a machine for finishing, the parts of boots and shoes, a finishing tool made up of a series of work rubbing elements capable of relative adjustment and supported for movement with their work rubbing surfaces in adjacent relation, and a resiIient backing member constructed and arranged to coact with said Work rubbing elements to determine and vary the contour of their combined work rubbing surfaces.

35. In a machine for finishing the parts of boots and shoes, a finishing tool made up of a series of work rubbing elements arranged for relative adjustment and supported for movement with their work rubbing surfaces in adjacent relation, and a backing member adapted to be placed in contact with the inner edges of the individual elements so as relatively to displace said elements and control the .contour'of the combined surface of the elements.

36. In a machine for finishing-the parts of boots and shoes, a finishing tool made upv of a series of elongated. work rubbing elements arranged for relative adjustment,means for supporting each of the ends of the various elements with the elements arranged in adjacent relation'to form a work rubbing surface whose contour is adjustable, and a backing member constructed and arranged to coact variably with said work rubbing elements intermediate between their points ofsupport to distort the combined work .-rubbin surface of the elements, thereby to pro ucea desired contour.

37. In a machine for finishing the parts of boots and shoes, a finishing tool comprising a shaft and a series ofwork rubbingelements arranged for relative adjustment in a direction parallel to said shaft,- said elements being operatively connected to said shaft for movement'therewith and havin their work rubbing surfaces arranged in adjacent relation to form a combined work rubbing surface of which the contour may be varied by the relative. adjustment of the various rubbing elements;

38. Ina machine for finishing the parts of boots and shoes, a'finishingtool made up of a series of work rubbing element arranged for relative adjustment and supported for movement withtheir workrubb ng surfaces in adjacent relation, saidfelements being capable of individual distortion to the end'that the resultant contour, of the work rubbing surface formed the adjacent surfaces of the component members may be varied;

39. In a machine forfinishing the parts of boots and shoes, a finishing tool made up of a series of work rubbing elements arranged for relative adjustment and supported for movement with their {WQIk rubbing surfaces in adjacent relation, and means coac'ting with, said elements to distort the individual elements .to form a work rubbing surfacewhose contour is substantially uniform around its whole periphery.

v In testimony whereof I have signed my name tothisjspecification LESTER s. MACDONALD.

CERTIFICATE OF CORRECTION.

Patent No. 1,644,931. Granted October 11, 1927, to

LESTER S. MACDONALD.

it is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page 1. lines 24, 25 and 26, strike out the words "being supported at their ends by the shaft and an annular member surrounding and attached to the shaft, same page, line 34, after the word and period "resilient." insert the words "As shown, the rubbing elements project from a rotary driven shaft, being supported at their ends by the shaft and an annular member surrounding and attached to the shaft, and the backing members engage the rear edges of the elements and cause the surface formed by the front edges of the elements to assume a contour dependent upon the position of the backing members. and that the said Letters Patent should be read with these corrections therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 20th day of December, A. D. 1927.

M. J. Moore, Seal. Acting Commissioner of Patents. 

